Paving stone



FIG. 1 is a side view of a concrete paving stone according to our design;

FIG. 2 is a front view of the stone of FIG. 1;

FIG. 3 is a top plan view of the stone of FIG. 1; and

FIG. 4 is a front perspective view of the stone of FIG. 1. 

The ornamental design for a paving stone, as shown. 